RT9030-18GQW Richtek

GND RT9030 150mA, Low Input Voltage, Low Dropout, Low Noise Ultra- Fast Without Bypass Capacitor CMOS LDO Regulator General Description Features Wide Operating Voltage Ranges : 1.65V to 5.5V The RT9030 is a high-performance, 150mA LDO regulator, Output Voltage Ranges : 1V to 3.3V offering extremely high PSRR and ultra-low dropout. Ideal Low Dropout : 100mV at 150mA for portable RF and wireless applications with demanding Ultra-Low-Noise for RF Application performance and space requirements. Ultra-Fast Response in Line/Load Transient The RT9030 quiescent current as low as 25A, further Current Limiting Protection prolonging the battery life. The RT9030 also works with Thermal Shutdown Protection low-ESR ceramic capacitors, reducing the amount of board High Power Supply Rejection Ratio space necessary for power applications, critical in hand- Only 1F Output Capacitor Required for Stability held wireless devices. TTL-Logic-Controlled Shutdown Input RoHS Compliant and Halogen Free The RT9030 consumes typical 0.7A in shutdown mode and has fast turn-on time less than 40s. The other features Applications include ultra-low dropout voltage, high output accuracy, CDMA/GSM Cellular Handsets current limiting protection, and high ripple rejection ratio. Portable Information Appliances Available in the SC-70-5 and WDFN-6L 1.6x1.6 package. Laptop, Palmtops, Notebook Computers Hand-Held Instruments Ordering Information RT9030- Mini PCI & PCI-Express Cards Package Type PCMCIA & New Cards U5 : SC-70-5 QW : WDFN-6L 1.6x1.6 (W-Type) Pin Configurations Lead Plating System (TOP VIEW) G : Green (Halogen Free and Pb Free) VOUT NC Fixed Output Voltage 5 4 10 : 1.0V 11 : 1.1V 23 : 32 : 3.2V VIN GND EN 33 : 3.3V SC-70-5 1B : 1.25V 1H : 1.85V 1 6 EN GND 2H : 2.85V 2 5 NC NC 1K : 1.05V 7 VIN 3 4 VOUT Note : Richtek products are : WDFN-6L 1.6x1.6 RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Marking Information Suitable for use in SnPb or Pb-free soldering processes. For marking information, contact our sales representative directly or through a Richtek distributor located in your area. DS9030-03 April 2011 www.richtek.com 1RT9030 Typical Application Circuit VIN VOUT V V IN OUT C C IN OUT 1F/X7R 1F/X7R RT9030 Chip Enable EN NC GND Functional Pin Description Pin Number Pin Name Pin Function WDFN-6L SC-70-5 1.6x1.6 5 4 VOUT Regulator Output. 4 2, 5 NC No Internal Connection. 6, Ground. The exposed pad must be soldered to a large PCB and 2 GND 7 (Exposed Pad) connected to GND for maximum power dissipation. Enable Input Logic, Active High. When the EN pin is open it will be pulled 3 1 EN to low internally. 1 3 VIN Supply Input. Function Block Diagram POR Current EN OTP Limit VIN V REF - MOS 1A + Driver VOUT GND www.richtek.com DS9030-03 April 2011 2